The boy on the Space Invader was reported to have undone his seat belt and stood up as part of a dare, and was subsequently ejected to his death.
This was not the rides fault, and I believe the I the philosophy of the age retriction is only a child or someone with a death wish would be stupid enough to stand up on a coaster, especially when it is enclosed.
Therefore, by applying age restrictions, the ride does not need modyfying.
I have noticed time and time again stupid kids standing up on several of the lap bar coasters at Blackpool, particularly the Roller Coaster which has no restraints at all. It only takes one accident to have and these classic rides will be ruined with hideous retraints that many coasters now have and don't need if people do not fool around.
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